HP DeskJet 2755e: Wi-Fi Connection Issue and Solution

⚠️ SAFETY WARNING. This appliance is connected to the electrical mains. It is mandatory to always unplug it before any disassembly or hardware intervention. If physical intervention or advanced configuration proves complex, for your safety, it is recommended to rely on a qualified technician. ReeFix provides this diagnosis EXCLUSIVELY for educational and informational purposes.

BEFORE THE FAILURE

The HP DeskJet 2755e printer operated correctly, both connected to the Wi-Fi network and in standby. Your home network environment likely uses a modern router (Wi-Fi 5 or 6) with a dual-band configuration and unified SSID (a single name for 2.4 GHz and 5 GHz networks). This configuration, also known as "Band Steering," is designed to optimize performance by redirecting devices to the most appropriate band. The printer, by its nature, prefers the 2.4 GHz band for its greater range.

AT THE TIME OF FAILURE

The problem manifests as the printer's inability to establish a stable Wi-Fi connection. The blue Wi-Fi light flashes continuously, indicating a failure in association or obtaining an IP address. The HP Smart app might initially detect the printer, but the configuration does not complete. This happens because the HP DeskJet 2755e's Wi-Fi module, despite being dual-band, often struggles to manage the dynamic Band Steering of some modern routers. The router tries to force it onto a band (often 5 GHz) that the printer cannot stably negotiate during association, entering a timeout loop. Another critical factor is the use of advanced security protocols like WPA3, with which the network chips in this device range are sometimes incompatible or unstable.

Key signals/indicators:

• Constant flashing blue Wi-Fi light: The most obvious symptom of failed association.
• Configuration failure via HP Smart app: The app finds the printer but does not complete the network connection.
• Other older devices with similar problems: If other IoT or older devices have difficulty connecting, the anomaly is almost certainly related to the router's configuration.

AFTER THE EVENT

Resolution requires intervention on the network configuration or, in rare cases, component replacement.

Quick checks (DIY, low complexity):

1. Printer network reset: Simultaneously press the "Wireless" and "Cancel" (X) buttons on the printer for at least 5 seconds. This clears network credentials and resets the Wi-Fi module. Try connecting again.
2. Wi-Fi Direct signal verification: After the reset, the printer should emit its own Wi-Fi signal (e.g., "HP-Setup-xx"). If this signal is not detectable by your smartphone/PC, it could indicate a hardware problem.
3. Test with USB cable: If available, connect the printer to the PC via an HP DeskJet 2755e printer USB A-B cable. This allows you to update the firmware or configure the network via software, bypassing the initial Wi-Fi.

Common errors:

• Repeatedly attempting to connect without altering router settings. The printer will continue to fail if the problem is upstream.
• Not considering the device category: printers in this range often have Wi-Fi modules that require simplified network configurations.
• Not distinguishing between a signal problem (coverage) and a protocol negotiation problem. The flashing light indicates the latter.

Cause Diagnosis and Probabilities:

1. Incompatibility with Band Steering / Unified SSID: 65%

   • Why: The router actively tries to manage the device between the two bands (2.4 GHz and 5 GHz), but the printer's firmware does not support rapid transition mechanisms, causing an association timeout.
   • How to check: Access the router's control panel (usually 192.168.1.1 or 192.168.0.1 in the browser) and look for the option to separate Wi-Fi bands, creating two distinct SSIDs (e.g., "MyNetwork_2.4G" and "MyNetwork_5G"). Then, manually connect the printer only to the "MyNetwork_2.4G" network. If separation is not possible, temporarily disable the 5 GHz band.

2. WPA3 security protocol active on the router: 20%

   • Why: Wi-Fi modules in the DeskJet 2700 series often do not support WPA3 and struggle even with mixed WPA2/WPA3 mode.
   • How to check: In the router panel, set the 2.4 GHz network security to WPA2-PSK (AES). Avoid mixed WPA/WPA2 or WPA3.

3. Saturation or interference on the 2.4 GHz channel: 10%

   • Why: A Wi-Fi channel congested by nearby networks or other devices can cause disconnections or difficulties in initial association.
   • How to check: In the router panel, manually fix the 2.4 GHz band channel to 1, 6, or 11, which are non-overlapping channels and less prone to interference.

4. Hardware failure of the Wi-Fi module or corrupted firmware: 5%

   • Why: Physical damage or a serious firmware error can prevent the Wi-Fi module from functioning correctly.
   • Indicators: The Wi-Fi light remains off or red, and the printer does not even emit the Wi-Fi Direct signal (HP-Setup-xx) after a hard reset. This is the least likely case.
   • Counter-examples: If the Wi-Fi Direct signal is present, the hardware module is likely functional.

Tools and Spare Parts:

• HP DeskJet 2755e printer USB A-B cable: Essential for initial configuration or for proceeding with firmware updates directly from a PC.
• HP DeskJet 2755e printer 2.4 GHz Wi-Fi Repeater: An alternative and effective solution to isolate the printer on a dedicated 2.4 GHz frequency, if the main router does not allow manual band separation.
• HP DeskJet 2700 series replacement motherboard: To be considered exclusively in case of confirmed hardware failure of the integrated Wi-Fi module.

Output for technician: "HP DeskJet 2755e printer with flashing blue Wi-Fi light, unable to connect to dual-band network with single SSID (Band Steering active). Network with mixed WPA2/WPA3. Router access required to separate bands (dedicated 2.4 GHz), set WPA2-PSK (AES), and fix channel (1, 6, or 11) for the 2.4 GHz SSID. Perform printer network reset and attempt association. Verify Wi-Fi Direct emission after reset."

Operational decision: If the quick checks resolve the problem, you can proceed independently. If the anomaly persists after trying to separate the bands and set WPA2-PSK (total 85% probability), we recommend contacting a technician for router configuration or considering the purchase of an HP DeskJet 2755e printer 2.4 GHz Wi-Fi Repeater. In case of hardware failure (5% probability), given the economical nature of the device, replacing the printer is often more cost-effective than purchasing and installing an HP DeskJet 2700 series replacement motherboard.

If you still decide to proceed with DIY repair, remember that motherboard replacement requires careful verification of exact serial code compatibility. Misaligned firmware or incorrect installation could prevent printer initialization or cause total blockage of paper presence sensors and printheads.